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July 8th, 2026 :: 4:21 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated July 8th at 2:54 am 
Temperature:68°F Dew Point:66°F
Barometer:30.06 inHg Wind:calm
Humidity:94.0% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jul 8th
Thursday
Jul 9th
Friday
Jul 10th
Saturday
Jul 11th
Sunday
Jul 12th
Mostly Sunny Mostly Sunny Thundershowers Thundershowers Mostly Sunny
83°F
85°F
68°F
84°F
68°F
83°F
68°F
81°F
68°F
 
 Decatur Detailed Weather Forecast  
 
Wednesday, July 8th, 2026
Morning Temperature: 73°F
Mostly sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 82°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 77°F
Clear. Chance of a thunderstorm.
Thursday, July 9th, 2026
Overnight Temperature: 69°F
Clear.
Morning Temperature: 74°F
Mostly sunny with a slight chance of showers or thundershowers.
Afternoon Temperature: 84°F
Sunny with cloudy periods with a slight chance of showers or thundershowers.
Evening Temperature: 72°F
A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm. Windy.
Friday, July 10th, 2026
Overnight Temperature: 68°F
Clear with cloudy periods with a slight chance of showers.
Morning Temperature: 73°F
Mostly sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 84°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 76°F
Mostly cloudy with a few showers. Chance of a thunderstorm.
Saturday, July 11th, 2026
Overnight Temperature: 69°F
A mix of cloudy and clear skies with a few showers. Slight chance of a thunderstorm.
Morning Temperature: 73°F
A mix of cloud and sun. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 82°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 75°F
Mostly clear. Chance of a thunderstorm.
Sunday, July 12th, 2026
Overnight Temperature: 69°F
Mostly clear. Slight chance of a thunderstorm.
Morning Temperature: 73°F
Sunny.
Afternoon Temperature: 81°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 74°F
Clear. Chance of a thunderstorm.
Monday, July 13th, 2026
Overnight Temperature: 67°F
Clear.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 80°F
Sunny.
Evening Temperature: 73°F
Clear. Slight chance of a thunderstorm.
Tuesday, July 14th, 2026
Overnight Temperature: 68°F
Clear.
Morning Temperature: 75°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 85°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.
Wednesday, July 15th, 2026
Overnight Temperature: 71°F
Mostly clear.
Morning Temperature: 75°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 84°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 79°F
Clear. Chance of a thunderstorm.
Thursday, July 16th, 2026
Overnight Temperature: 73°F
Clear. Chance of a thunderstorm.
Morning Temperature: 77°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 84°F
Mostly sunny with a chance of showers or thundershowers.
Evening Temperature: 79°F
Mostly clear with a chance of showers or thundershowers.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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